Method of production of mixed oil gas and water gas



March 6, 1934. G Rz N 1,949,819

METHOD OF PRODUCTION OF MIXED OIL GAS AND WATER GAS Fild July 11, 1929 "Ill/1111700011111,

r a ,6, AS5115 WM iro/F4494 6 carbon released by cracking, and the utilization Patented Mar. 6, 1934 OF PRODUCTION OF MIXED OIL GAS AND WATER GAS Harutyun G. Terzian, Philadelphia, Pa., assignor to The United Gas Improvement Company,

Philadelphia, Pa., a corporation of Pennsylvania Application July 11, 1929, Serial No. 377,537

2 Claims. (Cl. 48-208) METHOD gas off-take 29 from the wash box 6, may lead through another condenser (not shown) to storage or other disposal.

The vessel 2 is provided with the oil supply means 30, and the vessel 3 with the oil supply means 31. 32 is a steam or gas supply to vessel 2. Connection 34, provided with valve 35, leads from the condenser 5 to a plan of storage, not shown.

In operation the fuel bed of coal, coke, or like material in the generator is blasted with air and the blast gases burned with secondary air to store their heat in the vessels 2 and 3. In this operation valves 14 and 17 are open, valves 16, 19, 27, 28, 22 and 23 are closed. Then with valves 14 and 19 closed, oil may be admitted to vessel 2, with some steam or gas to act as a carrier, and vaporized and lightly cracked to fixed oil gas in vessels 2 and 3, flowing through connection 15 to the wash box 4 where tar is deposited, and through connection 20 to the condenser 5 where further tar and light oil is deposited. The oil gas then passes through connection 21 and may be passed either up or down, or alternately up and down, through the fuel bed depending on the manipulation of valves 22, 23, 27 and 28. The oil gas is cracked in the fuel bed, depositing therein the carbon released by the cracking, the reformed gas passing to the wash box 6 where further tar is removed, and from thence through condensers not shown to storage.

Then with valves 14 and 16 closed, and valve 19 open, oil may be introduced at 31 to the vessel 3, vaporized and lightly cracked and fixed to oil gas in the vessels 3 and 2, with some steam or gas introduced at 11 acting as a carrier. The flow is in reverse direction to the preceding oil gas run, through the wash box 4 and condenser 21 to the generator 1 where it may be passed through the fuel bed as before described, to the wash box 6 and to storage.

By the reversal of flow through vessels 2 and 3 the temperature condition in the two vessels may be balanced and controlled, at the same time, the oil gas generated in these vessels is treated for the removal of tar and light oils prior to its passage through the fuel bed for reforming to gas of lower calorific power and specific gravity.

The by-pass connection 24, by the operation of valves 25 and 38, may be availed of to by-pass all or part of the oil gas around the condenser 5, depending on the quantity of tar and light oil that is desired to be removed before the passage of the gas through the fuel bed.

Water gas may be produced in the generator by steaming the fuel bed in either direction (from The present invention relates to the manufacture of mixed oil gas and water gas, by reforming oil gas by passage through an ignited fuel bed with the deposition in the fuel bed of excess of the excess carbon in the production of water gas by air and steam blasting.

More particularly it relates to the method of operation described in the co-pending application of H. G. Terzian, Serial No. 329,978, filed on July 3, 1929, wherein oil is vaporized, lightly cracked, and the resultant oil gas fixed in chambers heated by the combustion of air blast gases from the fuel bed, and subjected to treatment for the removal of tar prior to its passage through the ignited fuel bed.

The object of the present invention is to provide improvements in the above method of operation as well as improved apparatus for its performance.

The invention will be described in connection with the attached drawing which forms part of this specification and which shows a partial elevation and partial vertical cross section of apparatus chosen for illustration by means of which the invention may be performed.

Referring to the drawing,

1, 2 and 3 indicate vessels similar to the water gas generator, carburetter and superheater of a carburetted water gas set. 4 is a wash box, 5 is a condenser, 6 is a wash box. The generator is provided with the air supply means 7 and the steam supply means 8 for air blasting and steaming upwardly through the fuel bed 9, and there may be provided means for down-steaming the fuel bed as at 10 and 11. 12 is a secondary air supply.

The generator is connected with vessel 2 by the connection 13, provided with valve 14. Vessel 2 is in communication with vessel 3, and vessel 3 is connected to wash box 4 by the connection 15 provided with valve 16. 17 is the stack valve of vessel 3. Vessel 2 is connected to the wash box 4 by the connection 18 provided with valve 19. The wash box 4 is connected to the condenser 5 by connection 20, provided with valve 33 and the gas outlet of the condenser is connected to the generator 1, above and below the fuel bed, by the connection 21 provided with valves 22 and 23. The by-pass connection 24, provided with valve 25, may be provided, leading from connection 20 to connection 21. The generator is provided with the gas oil-take connection 26 leading off from above and below the fuel bed through valves 27 and 28 to the wash box 6. The

steam supplies 8, 10 or 11) to utilize the deposited carbon, and water gas may be produced in controlled quantity by water vapor carried from the wash box by the oil gas according to the copending application.

Up-run water gas may be carburetted in the usual manner as in the manufacture of carburetted water gas, or the up-run water gas may be carburetted by the following operation: With valves 16, 19, 25 (or 22 and 23), 28 and 1? closed, and valves 14 and 27 opened, an up-run may be made with steam admitted at 8. Simultaneously oil may be admitted to vessel 3 at 31, vaporized, lightly cracked and the resultant oil gas fixed in vessels 3 and 2. The oil gas passes through connection 13 to the top of the generator, and together with the up-run blue water gas, passes through connection 26 to the wash box, where tar is removed. The oil gas in this case passes .into the generator but not through the fuel bed, prior :to the removal of tar.

keeping the fuel bed free and open will depend on'desired characteristics of the finished gas, as for instance, calorific power and specific gravity, and I do not wish to be limited in such matters or in the order of steps in the cycle of operation.

I claim:

l. The process of manufacturing a mixed hydrocarbon gas and water gas in a set composed of three vessels, of which one contains a bed of solid fuel and of which the other two contain heat storing material, which process includes the following steps: preheating two of said vessels by internal combustion of blast gas generated in the third vessel by air blasting the fuel bed, introducing a hydrocarbon alternately to one and then to the other of the preheated vessels and passing the hydrocarbon through the other preheated vessel,

passing at least a substantial portion of the hydrocarbon gas produced through the fuel bed, and extracting tar from the hydrocarbon gas before passing it through the fuel bed.

2. The process of manufacturing a mixed hydrocarbon gas and water gas in a set composed of three vessels, of which one contains a bed of solid fuel and of which the other two contain heat storing material, which process includes the following steps: preheating two of said vessels by internal combustion of blast gas generatedin the first mentioned vessel by air blasting the fuel bed, passing a hydrocarbon alternately successively through the other two preheated vessels in one direction and then in the opposite direction thereby generating hydrocarbon gas, extracting tar from the hydrocarbon gas so made, and passing at least a substantial portion of the hydrocarbon gas through the fuel bed.

HARUTYUN G. TERZIAN. 

